In order to avoid the danger of passing through the town, we generally used a path across the fields. I was returning from the trenches with some men one night along this path, when we saw from Maroc flashes of a light which was apparently being used as a signal. At once we were seized with an attack of spy-fever, and I said to the men, "There is someone signalling to the Germans." The night was so dark that signalling could have been seen at a considerable distance. Immediately we started off towards the light, which went out when we approached, but we discovered an officer in a mackintosh, and I at once asked him who he was. Tired as our men were, for they were coming out after being several days in the trenches, they followed me and were so keen on the adventure that one of them had drawn his revolver. The officer became very rude and he used some blasphemous words towards me in the dark, which naturally provoked a stern rebuke. I told him I was a Lieut.-Colonel, and that I should report him to his commanding officer. Then we asked him to give proof of his identity. I could see by his manner that he was becoming exceedingly uncomfortable, so I insisted upon his leading us to his headquarters. He did, and we stumbled on over telephone wires and piles of bricks till he brought us into the yard of a broken down house, in the cellars of which we found the officers of his battery. The O.C. was very polite and, when I pointed out to him the danger of flashing a light in the neighbourhood of the track which was used by our infantry battalions at night when going to or coming from the trenches, he said his unit would be more careful in the future. After a little conversation we left. A day (p. 197) or two afterwards I met one of the officers of the battery, and we had a good laugh over the incident, but he told me that it was even more amusing than I had thought, for the young officer had a dugout in the field and was making his way thither with nothing on but his pyjamas and his mackintosh. When we asked him for some proofs of his identity, he was terrified lest we should search him and find him in this peculiarly unmilitary costume, which might have made us still more suspicious.